/* === Theme Variables === */
:root,
[data-theme="light"] {
    --bg-primary: #fff;
    --bg-secondary: #f8f9fb;
    --bg-page: #f0f0f0;
    --bg-hover: #f5f5f5;
    --bg-code: #f0f0f0;
    --bg-pre: #f5f5f5;
    --text-primary: #333;
    --text-secondary: #666;
    --text-muted: #999;
    --border-color: #e5e5e5;
    --border-light: #ddd;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #eef2ff;
    --primary-text: #1e3a5f;
    --danger-color: #c00;
    --danger-bg: #fef2f2;
    --danger-border: #fcc;
    --card-bg: #fff;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --overlay-bg: rgba(0, 0, 0, 0.35);
    --modal-bg: #fff;
    --modal-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
    --input-bg: #fff;
    --input-border: #ddd;
    --input-focus-border: #3b82f6;
    --tag-bg: #e8e8e8;
    --tag-hover-bg: #d0d0d0;
    --blockquote-border: #d1d5db;
    --scrollbar-thumb: #ddd;
    --scrollbar-track: #f5f5f5;
    --scrollbar-hover: #bbb;
    --pin-color: #e67e22;
    --success-color: #16a34a;
    --success-bg: #dcfce7;
    --success-text: #166534;
    --danger-bg-light: #fef2f2;
    --danger-text: #c00;
    --dropdown-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --hover-border: #bbb;
    --card-hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] {
    --bg-primary: #1e1e1e;
    --bg-secondary: #1a1a1a;
    --bg-page: #121212;
    --bg-hover: #2a2a2a;
    --bg-code: #272727;
    --bg-pre: #1a1a1a;
    --text-primary: #d4d4d4;
    --text-secondary: #999;
    --text-muted: #666;
    --border-color: #383838;
    --border-light: #2e2e2e;
    --primary-color: #4a8ee6;
    --primary-hover: #6ba3ec;
    --primary-light: #1a2744;
    --primary-text: #93b8e8;
    --danger-color: #d45a5a;
    --danger-bg: #2d1212;
    --danger-border: #4a1c1c;
    --card-bg: #242424;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    --card-hover-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    --overlay-bg: rgba(0, 0, 0, 0.6);
    --modal-bg: #1e1e1e;
    --modal-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
    --input-bg: #2a2a2a;
    --input-border: #3a3a3a;
    --input-focus-border: #4a8ee6;
    --tag-bg: #2c2c2c;
    --tag-hover-bg: #383838;
    --blockquote-border: #404040;
    --scrollbar-thumb: #444;
    --scrollbar-track: #1a1a1a;
    --scrollbar-hover: #555;
    --pin-color: #c8883a;
    --success-color: #3aaf6a;
    --success-bg: #0a2e1a;
    --success-text: #50c880;
    --danger-bg-light: #2e1010;
    --danger-text: #e08080;
    --dropdown-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    --hover-border: #505050;
}

/* === Global Reset === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--bg-page);
    color: var(--text-primary);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 7px 14px;
    border-radius: 6px;
    border: none;
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    transition: background .15s, opacity .15s;
    text-decoration: none;
}

.btn:disabled {
    opacity: .5;
    cursor: default;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-outline {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
}

.btn-outline:hover {
    background: var(--bg-hover);
}

.btn-danger {
    background: var(--bg-primary);
    color: var(--danger-color);
    border: 1px solid var(--danger-border);
}

.btn-danger:hover {
    background: var(--danger-bg);
}

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

/* === Modal === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 20px;
}

.modal {
    background: var(--modal-bg);
    border-radius: 8px;
    padding: 24px;
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-x: hidden;
    overflow-y: auto;
    box-shadow: var(--modal-shadow);
}

.modal h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* === Tabs === */
.tab-bar {
    display: flex;
    gap: 0;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
}

.tab {
    padding: 8px 20px;
    font-size: 14px;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all .15s;
    font-family: inherit;
}

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 500;
}

.tab:hover:not(.active) {
    color: var(--text-secondary);
}

/* === Form Basics === */
.form-input {
    width: 100%;
    padding: 8px 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    outline: none;
    transition: border-color .15s;
}

.form-input:focus {
    border-color: var(--input-focus-border);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-error {
    font-size: 13px;
    color: var(--danger-color);
    margin-top: 8px;
}

/* === Feedback States === */
.status-msg {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 15px;
}

.error-banner {
    background: var(--danger-bg);
    color: var(--danger-color);
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 14px;
    margin-bottom: 12px;
}

/* === Markdown Content === */
.md-content {
    white-space: normal;
    color: var(--text-primary);
}

.md-content h1,
.md-content h2,
.md-content h3,
.md-content h4,
.md-content h5,
.md-content h6 {
    font-weight: 600;
    margin: 8px 0 4px;
    line-height: 1.3;
}

.md-content h1 {
    font-size: 1.3em;
}

.md-content h2 {
    font-size: 1.15em;
}

.md-content h3 {
    font-size: 1.05em;
}

.md-content strong,
.md-content b {
    font-weight: 600;
}

.md-content em,
.md-content i {
    font-style: italic;
}

.md-content ul,
.md-content ol {
    padding-left: 1.5em;
    margin: 4px 0;
}

.md-content li {
    margin: 2px 0;
}

.md-content blockquote {
    border-left: 3px solid var(--blockquote-border);
    padding-left: 12px;
    color: var(--text-secondary);
    margin: 6px 0;
}

.md-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 12px 0;
}

.md-content p {
    margin: 4px 0;
}

.md-content pre {
    max-width: 100%;
    background: var(--bg-pre);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 13px;
    overflow-x: auto;
}

.md-content code {
    background: var(--bg-code);
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.9em;
}

.md-content pre code {
    background: transparent;
    padding: 0;
    border-radius: 0;
    font-size: inherit;
}

.md-content a {
    color: var(--primary-color);
}

.md-content a:hover {
    text-decoration: underline;
    color: var(--primary-hover);
}

.md-content a:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 1px;
    border-radius: 2px;
}

/* === Scroll Utilities === */
.hide-scrollbar {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.hide-scrollbar::-webkit-scrollbar {
    display: none;
}

.modal-scroll-area {
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

.modal-scroll-area::-webkit-scrollbar {
    width: 6px;
}

.modal-scroll-area::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 3px;
}

.modal-scroll-area::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 3px;
}

.modal-scroll-area::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-hover);
}

/* === Theme Toggle Button === */
.theme-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--border-light);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 15px;
    transition: background .15s;
    padding: 0;
}

.theme-toggle-btn:hover {
    background: var(--bg-hover);
}

/* === Animations === */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}